/*
 * Copyright 2019 Netflix, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.mantisrx.master.events;

import io.mantisrx.master.events.LifecycleEventsProto.JobStatusEvent;
import io.mantisrx.master.events.LifecycleEventsProto.WorkerListChangedEvent;
import io.mantisrx.master.events.LifecycleEventsProto.WorkerStatusEvent;
import io.mantisrx.shaded.com.google.common.collect.ImmutableList;
import java.util.Collection;

public interface WorkerEventSubscriber {
    void process(final LifecycleEventsProto.WorkerListChangedEvent event);
    void process(final LifecycleEventsProto.JobStatusEvent statusEvent);

    void process(final LifecycleEventsProto.WorkerStatusEvent workerStatusEvent);

    default WorkerEventSubscriber and(WorkerEventSubscriber other) {
        return allOf(ImmutableList.of(this, other));
    }

    static WorkerEventSubscriber allOf(Collection<WorkerEventSubscriber> subscriberList) {
        return new WorkerEventSubscriber() {
            @Override
            public void process(WorkerListChangedEvent event) {
                subscriberList.forEach(subscriber -> subscriber.process(event));
            }

            @Override
            public void process(JobStatusEvent statusEvent) {
                subscriberList.forEach(subscriber -> subscriber.process(statusEvent));
            }

            @Override
            public void process(WorkerStatusEvent workerStatusEvent) {
                subscriberList.forEach(subscriber -> subscriber.process(workerStatusEvent));
            }
        };
    }
}
